Question
Let the lengths of the transverse and conjugate axes of a hyperbola in standard form be and , respectively, and one focus and the corresponding directrix of this hyperbola be and , respectively. If the product of the focal distances of a point on the hyperbola is , then is equal to ___________.
Answer: 2
Solution
This solution will guide you through solving a hyperbola problem by systematically applying key definitions and formulas. We'll break down the problem into logical steps, explaining the reasoning behind each calculation, and ensure proper mathematical notation.
1. Understanding the Key Concepts and Initial Setup
The problem involves a hyperbola in standard form. We are given its axis lengths, one focus, and its corresponding directrix. Our goal is to find the product of focal distances for a specific point on the hyperbola.
The fundamental definition of a hyperbola states that for any point on the hyperbola, the ratio of its distance from a focus to its distance from the corresponding directrix is a constant, called the eccentricity . Mathematically, this